Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
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877 FOCA52 TJSJ 272103 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 PM AST Sat Sep 27 2025 PRZ001-280800- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 PM AST Sat Sep 27 2025 Date 09/27/25 Sun 09/28/25 Mon 09/29/25 Tue AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 80 92 79 90 79 Temp 83 82 81 80 87 91 92 86 83 81 80 79 85 89 90 85 82 81 80 79 86 Dewpt 75 75 74 74 75 75 75 75 74 75 75 75 76 76 76 76 75 75 75 75 75 RH 77 79 79 82 68 60 58 70 74 82 85 88 75 66 64 75 79 82 85 88 70 Wind dir SW SW S S S S S S S S S S S SE SE SE SE SE SE SE SE Wind spd 5 5 3 3 4 9 13 12 6 6 4 5 5 10 14 11 8 6 5 4 8 Clouds B1 SC CL CL CL CL B1 B1 B1 B1 FW FW CL CL SC SC SC SC SC SC FW PoP 12hr 40 40 40 30 30 QPF 12hr 0.04 0.13 0.07 0.11 0.12 Rain shwrs C C C C C C C C C C C S Tstms S S Heat index 91 88 86 85 96102103 96 89 87 84 83 95100101 94 89 87 84 83 95 Max heat 96 90 96 103 102 88 95 102 101 88 95 High Surf Y Y Y Y Date 09/30 Wed 10/01/25 Thu 10/02/25 Fri 10/03/25 Sat 10/04/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 91 78 92 79 91 79 91 78 90 Temp 91 82 79 86 92 83 80 86 91 83 80 86 91 82 79 85 90 82 Dewpt 75 74 74 75 74 74 73 74 75 75 74 74 75 75 74 74 73 73 PWind dir SE SE SE S E SE E SE E Wind char GN LT GN LT GN LT LT LT LT Avg clouds SC SC CL FW SC SC FW FW SC SC FW FW SC B2 SC SC SC SC PoP 12hr 50 10 40 10 40 5 60 30 50 Rain shwrs C C S C C S S C C S S L L C C C C Tstms S S S S S S S S S S $$ PRZ002-280800- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 PM AST Sat Sep 27 2025 Date 09/27/25 Sun 09/28/25 Mon 09/29/25 Tue AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 76 90 78 88 77 Temp 80 78 77 76 84 89 90 85 82 80 79 78 84 87 88 83 80 79 78 77 84 Dewpt 76 75 75 75 77 77 76 76 76 76 76 76 77 77 77 77 76 77 75 75 76 RH 88 91 94 97 80 68 64 75 82 88 91 94 80 72 70 82 88 94 91 94 77 Wind dir SW SW SW SW S S S S S S S S SE S SE SE SE SE SE SE SE Wind spd 9 8 4 5 6 11 12 10 9 9 9 10 9 10 9 10 10 10 9 8 9 Clouds SC SC SC SC SC CL SC SC B2 B1 B1 B1 SC SC B2 B2 B2 B2 B2 B2 SC PoP 12hr 30 50 50 60 60 QPF 12hr 0.06 0.09 0.21 0.32 0.25 Rain shwrs S S C C S S S C C C C S S L L L L L L S Tstms S S S S Heat index 85 94101101 94 89 85 93100100 92 86 93 Max heat 93 83 94 103 101 87 93 101 99 85 93 High Surf Y Y Y Y Date 09/30 Wed 10/01/25 Thu 10/02/25 Fri 10/03/25 Sat 10/04/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 75 91 76 88 75 89 75 91 Temp 89 79 76 84 91 81 77 83 88 79 76 83 89 79 76 84 91 82 Dewpt 76 76 75 76 76 74 74 76 75 75 75 76 76 75 75 76 72 71 PWind dir SE SE SE SE SE SE E E E Wind char GN LT GN LT LT LT LT LT LT Avg clouds SC SC CL FW FW FW FW FW FW CL CL FW SC SC SC SC SC B1 PoP 12hr 40 10 10 20 20 5 30 30 60 Rain shwrs C C S S S S S S S C C C C L L Tstms S S S S $$ PRZ007-280800- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 PM AST Sat Sep 27 2025 Date 09/27/25 Sun 09/28/25 Mon 09/29/25 Tue AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 77 89 78 87 76 Temp 81 79 78 78 84 88 89 84 81 80 79 78 83 87 87 83 79 78 77 76 84 Dewpt 76 75 74 73 76 78 78 77 77 76 75 73 76 78 73 74 74 74 73 72 73 RH 85 88 88 85 77 72 70 80 88 88 88 85 80 75 63 74 85 88 87 87 70 Wind dir N N N NE NE S S SE E E NE E E SE SE SE E E E E E Wind spd 1 3 3 3 4 9 9 6 4 6 6 9 8 11 10 9 6 6 5 5 4 Clouds B2 SC B2 SC CL FW B1 B1 FW FW FW SC CL CL SC SC FW FW FW FW CL PoP 12hr 50 40 10 30 5 QPF 12hr 0.13 0.11 0.03 0.13 0 Rain shwrs C S C S C C S C C Tstms S S S Heat index 87 83 93101103 94 89 85 92 94 95 89 83 90 Max heat 93 85 93 103 102 87 92 95 94 90 Date 09/30 Wed 10/01/25 Thu 10/02/25 Fri 10/03/25 Sat 10/04/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 76 89 78 88 77 88 76 89 Temp 89 80 77 83 89 81 79 84 88 80 78 83 88 80 77 83 89 81 Dewpt 72 69 70 71 71 70 70 72 72 73 70 70 73 72 71 71 71 72 PWind dir SE E SE E SE NE E NE E Wind char GN LT LT LT LT LT LT LT LT Avg clouds CL CL CL CL FW FW CL CL FW FW CL CL FW SC FW FW FW FW PoP 12hr 0 0 5 5 20 0 30 10 5 Rain shwrs S S S S C C S S S S $$ PRZ008-280800- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 PM AST Sat Sep 27 2025 Date 09/27/25 Sun 09/28/25 Mon 09/29/25 Tue AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 76 88 77 88 75 Temp 80 78 77 77 83 87 88 83 80 79 77 77 83 87 88 82 79 77 76 75 83 Dewpt 75 75 74 72 75 75 76 75 74 75 74 73 75 76 76 75 75 76 74 73 75 RH 85 91 90 85 77 68 68 77 82 88 90 87 77 70 68 79 88 97 94 94 77 Wind dir SE SE S SE S SW S S SE SE S S SE SE S E E SE SE SE SE Wind spd 8 8 8 5 5 10 14 10 8 8 5 6 5 4 4 10 1 4 4 6 5 Clouds OV SC CL CL CL CL SC SC SC SC FW CL CL CL OV OV SC SC SC SC CL PoP 12hr 70 30 20 70 10 QPF 12hr 0.18 0.09 0.03 1.27 0.03 Rain shwrs L C C S S L L S S S S Tstms S S S Heat index 84 90 96 99 91 85 91 97 99 90 89 Max heat 89 90 99 98 84 91 99 98 89 High Surf Y Y Y Y Date 09/30 Wed 10/01/25 Thu 10/02/25 Fri 10/03/25 Sat 10/04/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 75 88 76 88 76 88 75 89 Temp 88 79 76 82 88 80 77 83 88 80 77 83 88 79 76 83 89 80 Dewpt 76 75 74 74 76 74 74 73 75 73 74 74 75 74 74 74 72 71 PWind dir E SE W SE S SE NE E E Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B1 CL CL FW SC FW FW SC SC CL FW FW SC FW FW SC B1 PoP 12hr 60 0 50 10 40 10 20 5 60 Rain shwrs L L C C S S C C S S S S S L L Tstms S S S S S S S S $$ PRZ010-280800- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 PM AST Sat Sep 27 2025 Date 09/27/25 Sun 09/28/25 Mon 09/29/25 Tue AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 75 92 76 92 74 Temp 80 78 76 76 85 90 92 85 81 78 77 76 85 91 92 84 79 77 75 75 86 Dewpt 76 75 74 74 77 77 78 77 76 76 75 75 76 77 78 77 76 76 75 74 76 RH 88 91 94 94 77 66 64 77 85 94 94 97 75 64 64 80 91 97100 97 72 Wind dir SE E SE SE SE S S S SE SE SE SE SE S S SE SE SE SE SE SE Wind spd 8 6 8 6 8 13 16 13 10 10 9 9 9 11 13 4 6 5 6 5 4 Clouds SC SC CL CL CL CL SC SC CL FW CL CL CL CL B1 B1 CL CL CL CL CL PoP 12hr 20 10 0 40 0 QPF 12hr 0.02 0.03 0 0.50 0 Rain shwrs S S S C C Tstms Heat index 86 95104107 96 87 95105107 94 84 95 Max heat 95 84 95 109 106 85 95 107 105 95 Date 09/30 Wed 10/01/25 Thu 10/02/25 Fri 10/03/25 Sat 10/04/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 94 74 93 75 93 75 93 74 93 Temp 94 80 75 85 93 80 76 85 93 80 76 85 93 80 76 85 93 80 Dewpt 77 76 74 75 77 75 73 75 77 75 74 75 78 75 74 76 71 73 PWind dir SE SE SE E SE E SW E E Wind char LT LT GN LT LT LT LT LT LT Avg clouds FW SC CL CL FW SC CL CL FW SC CL FW SC B1 FW FW FW SC PoP 12hr 40 0 40 5 50 10 60 10 50 Rain shwrs C C C C C C S L L S S C C Tstms S S S S S S S S S S $$ VIZ001-280800- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 PM AST Sat Sep 27 2025 Date 09/27/25 Sun 09/28/25 Mon 09/29/25 Tue AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 79 87 81 88 80 Temp 82 80 79 79 84 86 87 84 83 82 81 81 85 87 88 85 82 81 80 80 85 Dewpt 76 76 77 76 77 77 77 77 77 77 77 77 78 77 77 77 76 76 76 76 77 RH 82 88 94 91 80 75 72 80 82 85 88 88 80 72 70 77 82 85 88 88 77 Wind dir SW SW SW S S S S S SE SE SE SE SE SE SE SE SE SE SE SE SE Wind spd 11 12 10 10 11 13 14 13 13 16 13 12 11 13 14 13 14 14 13 11 14 Clouds SC SC B1 CL SC FW B1 B1 B2 B2 B2 SC B1 B1 B1 B1 B2 B2 B2 B2 SC PoP 12hr 40 50 50 50 50 QPF 12hr 0.08 0.16 0.23 0.19 0.21 Rain shwrs C C C C C C C C C S C C C C C C C C S Tstms Heat index 89 86 84 84 93 98 99 95 92 90 89 89 97100100 95 90 88 86 86 95 Max heat 94 89 93 99 98 91 97 101 100 89 95 Date 09/30 Wed 10/01/25 Thu 10/02/25 Fri 10/03/25 Sat 10/04/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 79 89 80 88 80 90 80 90 Temp 89 82 80 85 89 83 81 85 88 82 81 86 90 83 81 86 90 84 Dewpt 76 76 76 77 76 75 76 77 76 75 76 76 75 75 75 76 69 70 PWind dir SE SE SE SE SE SE E E E Wind char GN GN GN GN GN GN LT LT LT Avg clouds FW FW FW FW FW FW FW SC SC CL CL FW FW FW SC SC SC SC PoP 12hr 20 10 10 30 30 5 30 30 50 Rain shwrs S S S S S S S C C S S C C C C C Tstms S S $$ VIZ002-280800- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 PM AST Sat Sep 27 2025 Date 09/27/25 Sun 09/28/25 Mon 09/29/25 Tue AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 77 90 79 89 77 Temp 80 79 78 77 85 89 90 85 82 81 80 79 85 88 89 84 81 79 78 77 85 Dewpt 75 75 75 75 77 77 77 76 76 76 76 76 77 77 76 76 75 76 76 76 76 RH 85 88 91 94 77 68 66 75 82 85 88 91 77 70 66 77 82 91 94 97 75 Wind dir S S S S S S S SE SE SE SE SE SE SE SE SE E E E E E Wind spd 9 8 6 9 10 14 12 11 12 12 11 11 9 14 13 13 12 11 11 9 11 Clouds SC SC SC CL SC SC SC SC B2 B2 B2 SC B1 B1 SC SC SC SC SC SC SC PoP 12hr 30 50 50 40 30 QPF 12hr 0.04 0.13 0.24 0.15 0.12 Rain shwrs S S C S S C C C C C C C C C C C C C C S Heat index 85 95101103 95 90 87 84 84 95100100 93 86 93 Max heat 91 84 95 103 102 89 95 101 99 85 93 Date 09/30 Wed 10/01/25 Thu 10/02/25 Fri 10/03/25 Sat 10/04/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 90 77 91 77 90 77 90 76 91 Temp 90 81 78 85 91 81 78 84 90 81 78 84 90 80 77 84 91 82 Dewpt 76 75 74 75 76 74 74 76 76 75 75 75 75 75 75 76 72 73 PWind dir SE SE SE SE SE E E E E Wind char GN GN GN LT GN LT LT LT LT Avg clouds FW FW FW FW FW FW FW SC SC FW FW FW FW FW SC SC SC B1 PoP 12hr 20 10 10 30 30 5 20 20 60 Rain shwrs S S S S S S S C C S S S S S S S L L Tstms S S $$